if you want them to grow up together you have to play both house holds, hope this helps :)
You could make a pond and go fishing.
feed them play with them
you need to have sims 2 apartnent life
press Ctrl shift and space then when a box is on the top type in agesimscheat(on)
no, impossible and impossible only on computer
stretch it or sit on it
You pull up the cheat menu and type in: boolprop testingcheatsenabled true. then you shift and click on your sims and it should say make birthday. Then your sims will grow up! (hopefully, i did it and it worked)
Sadly, there is nothing you can do. Your friend will have to mature at his own rate.
It will automaticly grow up in 3 days. And remember to take good care if it!
Go to were you can buy your awards and there will be a time box, buy it.
The original games (of 2 and 3) can do this, you might just need to wait a bit longer for it to happen.
if u mean how do u find girl sims then u need 2 make another family for sims 2 including: GIRL BABY, GIRL TODDLER, GIRL KID, GIRL TEEN, GIRL ADULT, GIRL ELDER because for example if u have a boy kid they will grow up together and get together or watev and if u need more info email aura.games44@yahoo.com